The following table shows the actual demand observed over the last 11 years: Year Demand 1 2 3 4 5 6 7 8 9 10 11 7 8 5 10 12 9 13 14 B 9 8 This exercise contains only parts b, c, and d b) Using the 3-year moving average, provide the forecast from periods 4 through 12 (round your responses to one decimal place) Year Forecast 4 5 6 7 B 9 10 11 12 c) Using the 3-year weighted moving average with weights 0.10, 0.30, and 0.60, using 0.00 for the most recent period, provide the forecast from periods 4 through 12 (round your responses to two decimal places) Year Forecast 4 5 6 7 8 10 11 12 d) Mean absolute deviation for the forecast developed using the 3-year moving average is 2.75 and for the 3-year weighted moving average is 2.79. Based on this information, the better forecast is achieved using the approach 3-year moving average weighted moving average